Finding the Fourth Proportional to 3,759.20, 5,187.59 and 2,080.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,759.20 : 5,187.59 = 2,080.56 : x
2. Step 2: Convert to fraction form
   3,759.20/5,187.59 = 2,080.56/x
3. Step 3: Cross multiply
   3,759.20x = 5,187.59 × 2,080.56
4. Step 4: Simplify right side
   3,759.20x = 10,793,081.85
5. Step 5: Solve for x
   x = 10,793,081.85/3,759.20
6. Step 6: Final answer
   x = 2,871.12